A current equalizing device of a two-column valve plate parallel connection arrester
A lightning arrester and parallel connection technology, which is applied in the field of lightning arresters, can solve the problems of lightning arrester overheating, explosion, lightning arrester damage, etc., and achieve the effect of preventing lightning arrester damage or explosion accidents
Inactive Publication Date: 2018-05-15
WUHAN UNIV
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Problems solved by technology
[0002] The flow rate is one of the important parameters of the arrester. Parallel connection of multi-column resistor valves is a common method to improve the flow rate of the arrester. There is often a phenomenon that one column of valve slices is conducting and the other set of valve slices is not conducting, resulting in overheating of the arrester when the flow rate does not reach the design value, and accidents of arrester damage or explosion occur.
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[0012] The features and advantages of the present invention can be further understood through the following detailed description in conjunction with the accompanying drawings. The examples provided are only illustrative of the method of the present invention and do not limit the rest of the present disclosure in any way.
[0013] like figure 1 As shown, the technical scheme adopted in the specific embodiment is as follows: A current equalizing device for a two-column valve plate parallel connection type surge arrester, comprising a surge arrester resistance valve plate, and also including two coils wound on an iron core and the iron core, the described The winding direction of the two coils is such that when the lightning current passes through, the magnetic flux directions generated by the two coils in the iron core are opposite, the incoming lines of the two coils are respectively connected in series with the resistance valve plate of the arrester, and the outgoing lines of ...
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The invention discloses a current sharing device of a lightning arrester with two parallel column valves. The current sharing device comprises lightning arrester resistance valves and also comprises an iron core and two coils, wherein the two coils are wound around the iron core, the winding directions of the two coils conform to the way that magnetic flux directions generated by the two coils in the iron core are opposite, incoming lines of the two coils are separately connected in series with the lightning arrester resistance valves, and outgoing lines of the two coils are connected to the same grounding down lead. By the device, the lightning arrester with the two parallel column valves can be effectively prevented from being damaged or exploded by accident due to difference among parameters of the valves and conduction of a single valve caused by valve aging.
Description
technical field [0001] The invention relates to the field of lightning arresters, in particular to a current equalizing device for a parallel connection type lightning arrester with two column valve plates. Background technique [0002] The flow rate is one of the important parameters of the arrester. Parallel connection of multi-column resistor valves is a common method to improve the flow rate of the arrester. There is often a phenomenon that one column of valve plates is conducting and the other set of valve plates is not conducting, which leads to overheating of the arrester when the flow rate does not reach the design value, and accidents of arrester damage or explosion occur. Contents of the invention [0003] The purpose of the present invention is to propose a technology to balance the current distribution between the valve plates of the two-column resistor valve slices parallel connection surge arrester in view of the problems existing in the prior art, so as to p...
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IPC IPC(8): H02H9/02
CPCH02H9/02
Inventor 文武
Owner WUHAN UNIV